Island



UNITED STATES PATENT OFFICE.

JOHN .T. SHANAI-IAN, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO HIMSELF, JOHN J. MOCOMISH, AND THE NATIONAL YORSTED MILLS, INCORPORATED, ALL OF SAME PLACE.

STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 439,606, dated October 28, 1890. Application filed November 8, 1887 Serial No. 254,613. (No model.)

T0 to whom it may concern.-

Be it known that I, JOHN J. SHANAHAN, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and usefulImpro'vements in Stop-Motions for Looms, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to a stop-motion for automatically checking the running of aloom under certain defective conditions of the same.

The objects of myinvention are to provide an efficient stop-motion which under certain conditions will act to ship the lever which controls the picker-motion and to move the shipper-rod which effects the shipping of the driving-belt, and to throw into the path of the vibrating lay a check bar or arm for checking the lay in its forward beat, so as to destroy the momentum of the same.

To the aforesaid purposes my invention consists in the certainnovel and peculiar constructions and arrangements of the several parts of the mechanism or stop-motion, as herein described and claimed.

In order that my invention may be fully understood, I have illustrated in the accompanying drawings and will proceed to describe the best form thereof so far devised by me, with the knowledge that such form may be somewhat modified without, however, substantially departing from the spirit of the invention.

In the accompanying drawings, Figure 1 is a perspective view of aportion of an ordinary drop-box loom provided with my improved stop-motion. Fig. 2 is an enlarged sectional side view of portions of the mechanism shown in Fig. 1; and Fig. 3 is a sectional top plan view of portions of the mechanism shown in Fig. 2, with the breast-beam dotted in in position. Fig. 4 isa perspective view of another form of latch used in the stop-motion and shows portions of the rock-shafts and the lay.

In the said drawings, like numbers of reference designate corresponding parts throughout.

Referring to the drawings, the number 4 designates the lay of the loom, which is furnished with the ordinary drop-boxes 5, outlined in broken lines, and which are provided with the detector-levers or swell-fingers 6, the construction and office of which are well known to those skilled in the art.

At each end of the lay and upon the face thereof opposite the breast-beam 7 is mountd a rock-shaft 8, which turns in the-bearings 9 and is provided at the outer end with the fixed detector-finger 10, designed to be engaged and moved by the detector-levers, so as to rock the attached shaft 8. The rock-shafts are each provided with the spring 11, the ends of which are made fast to the lay and the shaft, respectively, so that the spring tends to hold the detector-fingers 10 in engagement with the detector-levers. To the inner ends of the rock-shafts are fixed the arms 12, each consisting of a sleeve having a setscrew and formed with a spur, which engage with the lateral arms of the three armed latch 13, which is provided with the lateral projections 14, which are journaled in the bearings 15, secured upon the lay intermediate the two rock-shafts. The end of the latch is formed with a hooked head 16, which is designed, under certain conditions, when the lay beats up to hook over and lock the latch-arm 17, which is of a peculiar shape, having parts thereof lying in three planes at right angles to each other. Thislatch-arm17 is supported and works in the oblique slot 18, formed in the bracket 19, which is secured upon the under side of the breast-beam 7. One end of the latch-arm 17 is pivoted to the hinged arm 20, which is hinged to the brace 21 of the loom. The link 22 connects the end of the hinged arm 20 with the end of the fixed arm 23, which is fast upon the shaft 24:, which is mounted in the bearings 25 upon a light crossbeam 37, which beam is supported at its ends in the side frames of the loom, or the shaft 24 may extend from one to the other of the side frames and be journaled therein, in which case the cross-beam and bearings 25 would be dispensed with. The shaft 24; is 'provided with the crank 26 for operating the picker-lever 27, which is shown in part only, the office of this lever being to stop the picker-motion, as will be readily understood by those familiar wit-h looms and upon reference to United States Patent No. 230,2l13. It now when the lay beats up the latch 13 is allowed to lock with the latch-arm 17, as shown in broken lines in Fig. 2, the outward movement of the lay will cause the locked latch-arm to be drawn outward by the latch and moved along the slot 18 of the bracket 19, and this will move the hinged arm 20 and the link 22 into the dotted-line position shown in Fig. 2, thereby throwing the fixed arm 23 toward the lay and turning the shaft at so as to rotate the crank 26 and ship the lever27, which willthereupon stop the picker-motion, as desired.

In order to check the vibration of the lay and prevent the momentum thereof from causing any damage, I provide the check-bar 28, which is hinged in the stand 29, attached underneath the breast-beam, and this cheek-bar is provided with a spring 30, which normally tends to keep the checlnbar elevated in the dotted-line position shown in Fig. 2. This check-bar projects toward the lay at right angles to the breast-beam, and is arranged so that when in elevated position its end will strike against the soft-rubber buffer 31, set in the plate 32, fixed 011 the face of the lay opposite the breast-beam; but when the bar is lowered, as in the full-line position, thelay clears it. The bar is held in the depressed position by means of the latclrarm 17 engaging one end of the bar, as shown in the figures.

The driving-belt of the loom, which is not shown, is shipped by means of the ordinary shipper-rod 33, which is shown in part, and, as is well known, it is adapted to move endwise, as illustrated in Patent No. 299,966. This shipper-rod I provide with the pushpiece 31, which is fixed rigidly thereto and is of a curved form, so that as the latch-arm 17 is moved by the latch 13 the free end of the former will slide over the curved face of the push-piece, and will thereby cause the shipper-rod 33 to move endwise and ship the belt as desired. The latch 13 is unlatched from the arm 17 by slipping off the right-hand side of the part of the latch-arm engaged thereby, as the arm 17 in moving along the oblique slot 18 is given a sufficient lateral motion to effect such disengagen'ient.

In Fig. 4 the latch 13 is shaped like the one in the other figures; but the cross-piece 35 thereof is swiveled at 36 to the latch, and the respective ends of the cross-piece are formed with slots 37, through which the ends of the respective arms 12 pass. The operation of this form of latch will be obvious.

From the foregoing description the following operation of my improvements will be readily understood. The arms 12 being on separate rock-shafts 8, either one or both of them will obviously support the latch, as shown in Fig. 1, the latch being only permitted to gravitate into the low locking position when both arms are moved away from the lay by the rocking of their shafts. Under proper running condition when the shuttle is about to make a pick the pocket in the drop-box at the other end of the race from where the shuttle which is about to be thrown is located should be empty, in order to receive the same at the end of its flight. The presence of a shuttle in the pocket directly under the end of the detectorfingers 10 will of course move the fingers tl'irongh means of the detector-levers, before explained, and rock the connected shaft so as to move the attached arm away from the latch. Obviously when the two pockets of the drop-box at the respective ends of the race each contains a shuttle the condition is defective and the picker-motion and the loom should be stopped. This stoppage will be completely effected by virtue of the defect causing both the arms 12 to move outward from the lay 4: at the same time, thereby lowering the latch 13, which as the lay heats up will lock with the latch-arm 17 and draw the same along the slot 18 of bracket 19 as the lay moves away from the breast-beam. This movement of the latcharm will simultaneously cause the operation of the picker-lever 27, the shipper-rod 33, and the check-bar, as hereinbefore described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, as heieinbefore set forth, with the lay, the drop-boxes, and the detector-levers for the drop-boxes, of the rockshafts and the detector-fingers for engaging the detector-levers and rocking the shafts, which are provided with devices tending to hold them in normal position, the pivoted latch and the arms actuated by the respective rock-shafts and controlling the operations of the latch, the picker-lever for controlling the picker-motion, the latch-arm engaged by the latch, and the connections intermediate the latch-arm and the picker-lever, whereby when the latch looks with the latch-arm the pickerlever may be operated to stop the picker-motion, as described.

2. The combination, as hereinbefore set forth, with the lay, the drop-boxes, and the detectonlevers therefor, of the spring-actuated rock-shafts, the detector-fingers for rocking the shafts, the arms actuated by the shafts, the latch controlled by the said arms, the picker-lever for controlling the picker-motion, the latclrarm engaged by the latch, the connections intermediate the latcharm and picker-lever, and the bracket provided with an oblique slot for the latch-arm for disengaging the latch and latch-arm as the lay moves out, substantially as and for the purpose herein described.

3. The combination, as hereinbefore set forth, with the lay, the drop-boxes, and the letector-levers therefor, of the spring-actuated rock -shafts, the detector-fingers engaging the detector-levers and rocking the shafts, the pivoted latch, the arms actuated by the respective rock-shafts for controlling the latch, the latcharm, and the spring-actuated check-bar engaged by the latch-arm for checking the inward beat of the lay, substantially as and for the purpose herein described.

4. The combination, as hereinbefore set forth, with the lay, the drop-boxes, and the detector-levers therefor, of the spring-actuated rock-shafts, the detectorfingers engaging the levers and rocking the shafts, the latch, the arms actuated by the respective shafts and controlling the operations of the latch, the latch-arm engaged by the latch, the picker-lever and the slotted bracket for the latch-arm, the endwise-moving shipper-rod, devices intermediate the latch-arm and the picker-lever, and the push-piece engaged by the latch-arm and moving the shipper-rod, substantially as and for the purpose herein described.

5. The combination, as hereinbefore setforth, with the lay, the drop-boxes, and the detector-levers therefor, of the spring-actuated rock-shafts provided each with a fixed detector-finger engaging the levers of the adjacent drop-box, the pivoted latch, an arm fixed upon each of the rock-shafts and each engaging the latchand each or both holding the latch from looking, the slotted bracket, the latch arm sliding in the slot thereof, the picker-lever for the picker-motion, the shaft provided With a crank for operating the picker-lever, a fixed arm on the said shaft, a hinged arm pivoted to the latch-arm, and alink connecting the hinged arm With the fixed arm, substantially as described.

6. The combination, with the lay 4, the drop-boxes 5, having the detector-levers 6, the spriiigactuated rock-shafts 8, provided with the detector-fingers 10, respectively, for engaging the levers 6, the arms 12 on the rock-shafts, and the pivoted latch 13, engaged by the arms 12, of the latch-arm 17, the support therefor, the hinged arm 20, having the latch-arm pivoted thereto, the picker-lever 27, the shaft 24, provided with the crank 26 for engaging the picker-lever, the fixed arm 23, secured to shaft 24, and the link 22, intermediate the arms 23 and 20, substantially as described.

7. The combination, with the lay 4, the drop boxes 5, provided with the detector-levers 6, the spring-actuated rock-shafts 8, each provided with a detector-finger 10, and an arm 12, of the pivoted latch 13, the latch-arm 17, having a support and engaging the latch, and the spring-actuated pivoted check-bar 28 for checking the beating up of the lay, substantially as described.

8. The combination, with the lay 4, the drop-boxes 5, provided with the detector-levers 6, the spring-actuated rock-shafts 8, each provided With a detector-finger 10 and an arm 12, the pivoted latch 13, the latch-arm 17, the pivoted check-bar 28, the slotted bracket 19, and the endWise-moving shipper-rod 33, provided with the push-piece 34, substantially as described.

JOHN J. SHANAHAN.

Witnesses:

J. H. MOOA FEE, JosnPH A. MILLER, Jr. 

